Method of working gas-producers of the mond type.



J. B. CHADWICKKL PFHOLLINSHEAD.

METHOD OF WORKING GAS PRODUCERS OF THE MOND TYPE- APPLICATION HLED JULY 12.1912.

1,210,598. Patented Jan. 2,191'2.

Witnesses. v I

Y Invmtar BEST AVAILABLE COP NI ED STATES PATENT OFFICE.

JOHN BROOKES CHADWICK AND PETER IiOLLINSHEAD, F RUNCORN, ENGLAND, ASSIGNGBS TO THE SALT UNION, LIMITED, 01? LIVERPOOL, ENGLAND.

mn'rnon or wonxmo oas-r'nonncnns or run mom) rrria.

ileicscs.

The Beeches, Weston Road; both in Runcorn, in the county of 'Chester, England, have invented certain new. and useful Methods of Working Gas Producers of the Mend Type; of which the following is a I, specification.

This inventionrelates to the working of gas producers of the Mond or by-product type and consists in adding lime to the fuel,

the ohject being to lessen the deficiencies and inconveniences which result when using bituminous fuels so that the working may be accomplished with greater economy than heretofore. In the working oflsuch pro ducers according to the'method ordinarily ,and universally adopted, in which the fuel is fed to the producers and subj ected therein to the action of air and steam it is found that the output of ammonia falls 6011311181. ably below the desired quantity. and the gas is of a low calorific value. Moreover. most bituminous fuels have a considerable tendency to. fuse together or cake, thereby causing great inconvenience and entailing a great jamount of labor.

Acco ding to the present invention the bituminous fuel is mixed with limc,.ep that the eflicient Working of the producers is obtained with a considerable increase in: theoutput of ammonia and 9. raising of the calorific value of the gas as well as the prevention of the caking of the fuel. In order .that the said invention may be clearly mas to allow of the coal and lime being (lei-stood and readily carried into efl'ect, we

will proceed to describe the same with reference to the accompanying diagrammatic drawing showing one method of mixing the;

lime with the fuel and conducting the same to the producers.

a is a truck containing coal or fuel and a a receptacle containing lime, the 'truck'a'nd receptacle being-arranged 1n such manner dumped into a receptacle or chambers. A bucket chain elevator b or the like 18 adapted to raise the mixture of coal and lime from the chamber a" to another conveyer I)? of the Archimedean screw type and this latter conveyor is adaptedto convey the mixture to the hoppers c which are arspecification of hetters latent. a lic tion and 1111 12, lam. seri l are. 709,118.

. and also of the hydrogen in the gas.

ranged in a: series or row above the respective producers d. v "'Theifuel is fed intothe upper part of theproducer Zas required and allowed to enter the same in. a. manner well known to Patented Jan. 2, 1917.

those accustomed to work power gas provducers, the ashes being removed fronf a water lute eat the bottom of the producer:

According to the ordinary practice it is found that from about 60% to of these cent hydrogen, and "to produce a coni- "taining 11 higher percentage of hydrogen. To this end therefore lime is introduced into the gas produce-r, so as to bring about a considerable increase in the yield of ammonia and 'at the same time counteract orlessen the tendency of the fuel to cake.

It has been found that, the best resu'ltsarc obtained by introducing the lime in the form of a hydrated powder, intimatciy .mixed with the fuel andxthis mixing 1s accomplished while the fuel-iris in bulk in mation of a larger percentage of the hi 'trogen contained in the fuel. withthe nae the aforesaid receptacle cit-previous to being elevated -to' the 'hoppers fc (if :the producer. ,The aforesaid method "o introducing and mixing the .lime at the foot of the elevator is very'convenient as it is found that, owing to the action on the fuel by the elevator j b and the passage thereof through the con veyer, the fuelbecomes thorou hlycovered with a-coating of. the lime "be ore it enters or istadmitted td'the producerl A 1% addition of the hydrated lime powder has been found bnntabout" a considerable 1m crease in the yield of Sulfate ofammolx ilila e fine coating or dusting of the hydrated lime moveover retards the tendency for fusing together ofthe fuel, and thus prevents the particles cakin'g together and forming a The method of increasing the ammonia and hydrogen output in the manufacture of producer gas including intimately mixing lime with the coal, burning the coal in a producer, and pussing steam through the burning mixture m such quantity as to reduce the temperature-t0 a point below that V of the breaking up of the ammonia.

In testimony whereof we aflix our signatures in presence of two witnesses.

JOHN BROOKES CHADWICK. PETER I-IOLLINSHEAD.- 'Witnesse's:

Rrcxmko H. Pnnms, Ems Roam-rs. 

